<template>
    <div>
        <!-- 头部区域 -->
        <div style="height: 60px; line-height: 60px; background-color: white; margin-bottom: 2px; display: flex">
            <div style="width: 300px">
                <img src="@/assets/logo.png" alt="" style="width: 40px; position: relative; top: 10px; left: 20px">
                <span style="margin-left: 25px; font-size: 24px">图书管理系统</span>
            </div>
            <div style="flex: 1; text-align: right; padding-right: 20px">
                <el-dropdown size="medium">
          <span class="el-dropdown-link" style="cursor: pointer">
            {{ admin.username }}<i class="el-icon-arrow-down el-icon--right"></i>
          </span>
                    <el-dropdown-menu slot="dropdown" style="margin-top: -5px">
                        <el-dropdown-item>
                            <div style="width: 50px; text-align: center;" @click="logout">退出</div>
                        </el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>
            </div>
        </div>

        <!-- 侧边栏和主体 -->
        <div style="display: flex">
            <!-- 侧边栏导航 -->
            <div style="width: 200px; min-height: calc(100vh - 62px); overflow: hidden; margin-right: 2px; background-color: white">
                <el-menu :default-active="$route.path" router class="el-menu-demo" style="margin-bottom: 10px">
                    <el-menu-item index="/admin/home">
                        <i class="el-icon-s-home"></i>
                        <span>首页</span>
                    </el-menu-item>
                    <el-menu-item index="/admin/echarts">
                        <i class="el-icon-coin"></i>
                        <span>数据展示</span>
                    </el-menu-item>
                    <el-submenu index="user">
                        <template slot="title">
                            <i class="el-icon-user"></i>
                            <span>用户管理</span>
                        </template>
                        <el-menu-item index="/admin/addUser">用户添加</el-menu-item>
                        <el-menu-item index="/admin/user">用户列表</el-menu-item>
                    </el-submenu>
                    <el-submenu index="admin">
                        <template slot="title">
                            <i class="el-icon-place"></i>
                            <span>管理员管理</span>
                        </template>
                        <el-menu-item index="/admin/addAdmin">管理员添加</el-menu-item>
                        <el-menu-item index="/admin/adminList">管理员列表</el-menu-item>
                    </el-submenu>
                    <el-submenu index="book">
                        <template slot="title">
                            <i class="el-icon-notebook-1"></i>
                            <span>图书管理</span>
                        </template>
                        <el-menu-item index="/admin/addBook">图书添加</el-menu-item>
                        <el-menu-item index="/admin/bookList">图书列表</el-menu-item>
                    </el-submenu>
                    <el-submenu index="borrow">
                        <template slot="title">
                            <i class="el-icon-document-copy"></i>
                            <span>借阅管理</span>
                        </template>
                        <el-menu-item index="/admin/addBorrow">借书添加</el-menu-item>
                        <el-menu-item index="/admin/borrowList">借阅列表</el-menu-item>
<!--                        <el-menu-item index="/admin/uploadFile">上传文件</el-menu-item>-->
                    </el-submenu>
                </el-menu>
            </div>

            <!-- 主体数据 -->
            <!-- width: 0; 可以限制容器的宽度，不被子元素无限撑开-->
            <div style="flex: 1; width: 0; background-color: white; padding: 10px">
                <router-view/>
            </div>
        </div>
    </div>
</template>

<script>
import Cookies from 'js-cookie'

export default {
    name: "Layout.vue",
    data() {
        return {
            admin: Cookies.get('admin') ? JSON.parse(Cookies.get('admin')) : {}
        }
    },
    methods: {
        logout() {
            // 清除浏览器用户数据
            Cookies.remove('admin')
            this.$router.push('/login')
        }
    },
    mounted() {
    }
}
</script>

<style scoped>

</style>
